Is there no way? There is a similar question here from 2015 with no answer.
Our kitchen was tiled with thin, copper-colored aluminum tiles (probably in the '80s), which look like this:
The adhesive is brown, brittle, somewhat flexible, and could be acrylic or latex but I am unsure. It has a rather acrid "organic chemical" smell similar to plumbing putty:
I haven't tried a heat-gun yet but am thinking this may be the way to go. But before I do, are there any concerns? Any chance asbestos could be involved?